# XrErrorCallback

Type alias · category: Other

Source: https://github.com/playcanvas/engine/blob/970d89f6d3bc6667f4e1f88153abd6e7e82ed52c/src/framework/xr/xr-manager.js#L38

Callback used by [XrManager#start](https://api.playcanvas.com/engine/classes/XrManager.md#start) and [XrManager#end](https://api.playcanvas.com/engine/classes/XrManager.md#end).

```ts
type XrErrorCallback = (err: Error | null) => void
```